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Table 10 Evaluation of dispersions for different polymers

From: Long permanence high altitude airships: the opportunity of hydrogen

Loses for a 20 μm membrane

Ground

16 km

 

V(H2)

V(He)

V(02)

V(H2)

V(He)

V(02)

 

[m3gas/m2 h]

[m3gas/m2 h]

[m3gas/m2 h]

[m3gas/m2 h]

[m3gas/m2 h]

[m3gas/m2 h]

Poly(ethylene) density 0.914 g/cm^-3

7.13E-05

3.56E-05

2.12E-05

1.07E-05

5.34E-06

3.18E-06

Polyvinilecloride plasticized 10 %

1.25E-05

 

3.69E-08

1.88E-06

 

5.53E-09

Polyvinilacetate

4.77E-05

2.88E-05

1.31E-06

7.15E-06

4.32E-06

1.96E-07

Poly(trifluorochloroethylene) film 30 % cristallinity

6.79E-06

4.91E-05

2.89E-07

1.02E-06

7.37E-06

4.33E-08

Mylar A

4.7E-06

2.35E-06

2.89E-07

7.05E-07

3.52E-07

4.33E-08

Nylon 6

    

5.75E-07

4.12E-08

Nylon 11

1.29E-05

1.41E-05

 

1.94E-06

2.11E-06

 

Cellophane (relative humidity 43 %)

1.16E-07

 

5.16E-08

1.73E-08

 

7.74E-09